

Depends on legislature.
18 year olds and above are considered basically adults in terms of rights in a lot of countries. Technically, they are teenagers, if we refer to the age group 10 to 19 as teens. It’s obvious though that everyone below that “adult-age” limit is not considered an adult.
Brainstorming. ChatGPT and co. are slightly better rubber ducks. Which helps to sort my thoughts and evaluate ideas.
Also when researching a new topic I barely know anything about, it helps to get useful pointers and keywords for further research and reading. It’s like an interactive Wikipedia in that regard.